Concrete mold



May 27, 1930. w. J. PEDERSEN CONCRETE MOLD- vFiled Jan'. 21, 1928 INVTOR i www1/5me ATroR EYv l Patented May 27, 1930 UNTED STATES rareroFFlcE WALDEMAR J. PEDERSEN, or FLORAL PARK, LONG isLANn, NEW Yon-KCONCRETE MOLD Application filed January 21, 1928. Serial No.' 248,542.

y This invention relates to molds and particularly to slabs used in theconstruction of the walls of buildings; and the object of the inventionis to provide a plurality of substantially similar mold sectionspreferably fashioned from sheet metal, and which are arranged side byside in stacked relation to facilitate the forming of a multiplicity ofmolded bodiesin a single operation; a further object being to providesaid mold sections with angularly disposed end wall members forming atthe opposite sides or ends of the molded body, beveled walls, said endwalls having means for supporting reinforcing rods or Wires to beembedded in the molded bodies; a further object being to provide bottommold members or pallets adapted to reinforce the lower end portions ofthe mold sections and to accuratelyspace said sections one from theother in conjunction with the end walls of said sections, said end wallshaving means for preventing lateral displacement-s of the sections oneupon the other; and with these and other objects in view, the'inventionconsists in a mold of the class and for the purpose specified, which issimple in construction, efficient in use, and which is constructed ashereinafter described and claimed.

The invent-ion is fully disclosed in the following specification, ofwhich the accom` panying drawing forms a part, in which the separateparts of my improvement are designated by suitable reference charactersin each of the views, and in which Fig. 1 is a plan view of a part of amold made according to my invention and illustrating a number of moldsections.

Fig. 2 is a side and sectional view of the structure shown in Fig.1.

Fig. 3 is a perspective detail view of one of a number of mold sectionswhich l employ; and,

Fig. 4 is a perspective view of one of the molded bodies formed by myimproved mold construction.

In carrying my invention into effect, I provide a plurality of similaror substantially similar mold sections 10, which in the constructionshown, consist yof sheets of metal,

the end portions of which are provided with angularly disposed end walls11 and 12. The wall 11 of each section is arranged on one side face ofthe wall 10 and is formed from the material of said wall, by bending oneend portion thereof backwardly upon itself as seen at 13, and thenoutwardly and angularly with reference to the longitudinal andtransverse planes of the'wall 10, and at an angle of approximatelyforty-five degrees. .The free end portion of the wall 11 is bentoutwardly in parallel relation to the wall 10 as' seen at 14, and thenat right angles to form a retaining lip or flangev 15, providing arecess or seat 16 on the inner face 'thereof in which` the wall 10 of anadjacent section seats in coupling and' alining a multiplicity ofsections. 4 i

The wall 12 is also formed from the materialiof the wall 10, and .isarranged 'at the opposite side face of said wall, by bending one endportion thereof backwardly upon itself as seen at 17 and then outwardlyand angularly to said side face at the same angle as that of the wall 11and is then bentoutwardly in parallel relation to the wall 10 as seen at18 and then at right angles to the part 18 to form a lip orflange 19 onthe inner face of which is a recess or seat 20, in which the wall 10 ofan adjacent section seats in the alinement of a number of mold sections.It will alsobeunderstood that the part 18 of the wall member is arrangedadjacent the wall 10 of an adjacent section as clearly seen in Fig. 1 ofthe drawing. The angularly arranged portions of the walls 11 and 12 areprovided with apertures 11a and 12a spaced vertically thereof, in whichreinforcing rods 21 are adapted to be supported, said rodsextending'through the end walls to provide ends 21a which projectthrough the molded concrete body 22 formed within'and between the wallsof adjacent mold sections. i

In coupling the mold sections together, pallets 23 are arranged betweenthe adjacent faces of the mold sections at the lower ends thereof andareof a form corresponding tov the horizontal cross sectional form of themold chambers 24 formed between said sections. The ends ofthe pallets 23have tapered walls corresponding to the angular arrangement of the walls11 and 12. The pallets 23 are provided with spaced apertures 25 in whichvertical reinforcing rods 26 are adapted to be supported to extendvertically through the mold chambers 211. That part of the rods 26 whichextends into the pallets, projects from .the resulting molded body 22 asseen in Fig. l of the drawing, and if desired, both ends of the rod maybe projected by merely extending said rods above the top surface of themold chambers.` It will also be noted that ythe horizontal reinforcingstrands 21 are interwoven with the vertical rods 26 in order to aid insupporting` said rods in proper position, and any number of the strandsor rods of reinforcing material may be employed.

In the use of my improved mold sections, one end mold is placed againsta block or suitable backing, and thisend mold, for eX- ample the mold10a, Fig. 1 may have the wall member 11 only thereon, and the othermolds are placed side by side and intercoupled in the manner illustratedin Fig. 1 with the flanges l5 and 19 overlying the end walls of adjacentsections to properly aline the sections one with the other. After thedesired number of sections have been placed in position and the pallets23 arranged therebetween, the opposite end mold section, not shown, isblocked up Vunder pressure against the backing wall for the section 10ato retain all ofthe sections in proper position. The reinforcing rodsbeing placed in position in the manner described, the concrete may nowbe poured or otherwise placed in the multiplicity of mold chambers'2aformed by the mold sections employed. When the bodies of concrete havebecome set or partially set to a degree sufficient to permit of theremoval of the mold sections therefrom, this operation vis performed andthe molded bodies 22 are Vallowed tc stand in upright and stackedrelation upon the pallets 23 until said molded bodies have become fullyset, after which time they may be removed for use or storage as may bedesired, the pallets being removed therefrom. It will be understood thatmy invention is not necessarily limited to the formation of the endwalls 11 and 12 integral with the walls 10, nor. to the specificstructural formation of the mold sections herein shown and described,and various other changes in and modifications of the constructionherein shown and described may be made within the scope of the appendedclaims without departing from the spirit of the invention or sacrificingits advantages.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent, is:

1. In a mold of the class described, a mold section comprising avertically arranged straight wall member, side wall members ar- 16th dayranged at the side edges of said vertical wall member and beingsubstantially V-shaped in cross sectional form, including portionsarranged in parallel and abutting relation to the adjacent surfaces ofthe vertical-wall member, portions arranged at an angle o-fapproximately forty-five degrees to the first named portion and saidvertical wall member, and the free edges of said angular portionsterminating in angular flanges for alining one wall .member with anadjacent wall member in forming a multiple chamber mold.

v 2. In a mold of the class described, a mold section comprising avertically arranged straight wall member, side wall members arranged atthe side edges of said vertical wall member and being substantiallyV-shaped in cross sectional form including portions arranged in paralleland abutting relation to the adjacent surfaces ofthe vertical wallmember, portions arranged at an angle of approximately forty-fivedegrees tothefirst named portion and said vertical wall member, and thefree edges of said angular portions terminating inV angular flanges foralining one wall member with an adjacent wall member in forming amultiple chamber mold, and said side wall members being arranged atgpposite side faces of the vertical wall memer.

3. In a mold of the class described, a mold section comprising avertically arranged straight wall member, side wall members a1'- rangedat the side edges of said Vertical wall member and being substantiallyV-shaped in cross sectional form including portions arranged in paralleland abutting relation to the adjacent surfaces of the vertical wallmember', portions arranged at an angle o-f approximately forty-fivedegrees to the first named portion and said vertical wall member, thefree edges of said angular portions terminating in angular flanges foralining one wall member with an adjacent wall member in forming amultiple chamber mold, said side wall members being arranged at oppositeside faces of the vertical wall member, and the angular portion of saidside wall member at cne side of the mold section being directed inwardlyand at the other side being directed outwardly.

In testimony that I claim the foregoing as my invention I have signed myname this of January, 1928. l TALDEMAR J. PEDERSEN.

